[all-commits] [llvm/llvm-project] 2c12c1: [X86] Check if an invoked function clobbers fp or ...

[weiguozhi via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 2c12c1e755a1bf453b246027b450b3b8e30fb016
      https://github.com/llvm/llvm-project/commit/2c12c1e755a1bf453b246027b450b3b8e30fb016
  Author: weiguozhi <57237827+weiguozhi at users.noreply.github.com>
  Date:   2024-08-14 (Wed, 14 Aug 2024)

  Changed paths:
    M llvm/lib/Target/X86/X86ISelLoweringCall.cpp
    M llvm/lib/Target/X86/X86MachineFunctionInfo.h
    M llvm/lib/Target/X86/X86RegisterInfo.cpp
    A llvm/test/CodeGen/X86/fp-clobbered-by-eh.ll

  Log Message:
  -----------
  [X86] Check if an invoked function clobbers fp or bp (#103446)

In most cases when an instruction or function call clobbers fp and/or bp
register, we can fix it by save/restore the clobbered register. But we
still can't handle it when an invoked function clobbers fp and/or bp
according to its calling convention. This patch detects this case and
reports error instead of silently generating wrong code.



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